Portable elevator



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PORTABLE ELEVATOR.

Patented Se t; 23, 1884..

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4 Sheets-Sheet 3.

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PORTABLE ELEVATOR. No; 305,639. Patented Sept. 23, 1884.

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(No Model.) .4 Shets- -Sheet 4.

F. 0.8TARKE. PORTABLE ELEVATOR.

No 305,639. v Patented Sept. 23, 1884.

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UNITED STATES Arena; i

FRED. STARKE, OF MILWVAUKEE, WISCONSIN.

PORTABLE ELEVATOR.

:LPBCIFICATION forming part of Letters Patent No. 305,639, dated September 23, 1884.

Application filed August 11, 1884.

.L'o ItZZ w/wnt (it viz/1 7 concern:

Be it known that I, FRED. O. STARKE, of Milwaukee, in the county of Milwaukee, and in the State of WVisconsin, have invented certain new and useful Improvements in Portable Elevators; and I .do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to coal-elevators, ant will be fully described hereinafter.

In the drawings, Figure l is a perspective Fig. 2 is a side elevation of the same. Fig. 3 is a rear elevation. Fig. 4 is a vertical section through the center of the derrick-platform, and Fig. 5 is a perspective view of one of the buckets.

A is the platform of mydevice. which normally rests upon casters; and A is the base of my derrick, which is swivelcd to the platform. and carries lugsa a, towhich the standards D are pivoted by a bolt, a.

B is an adj listing-brace that is pivoted between lugs b b, that project down from the base A, which is of inverted-cup shape, and is slotted to permit the brace B to pass through it. The platform has a spindle, A projecting up from it, to form a pivot for the hub b of the base A. The base A also carries an up-- right shaft, G, on the lower end of which is a pinion, O, that meshes with the teeth of a semi-annular rack, a, fastened to or forming part of the platform, and by this shaft, pinion, and rack the base is turned.

D are swinging arms that support the members D D of the crane, over which the buckets travel.

E is an engine, that is fed by a hose, E, and has an exhaust-pipe, E The piston F of this engine is wristed to the arm of a crankshaft, F, which is geared by pinion f, meshing with pinion f to a shaft, f, extending from one member of the crane to the other, and carrying a sprocket-wheel, f, for the endless drive chain G, which passes over another sprocket-wheel, f on a shaft, near the bottom of the crane, and the shaft of the sprocket-wheel f 2 carries near each end larger sprocket-wheels gg, which it drives, and which in turn drive the bucketchains H, that pass over sprocket-wheels H at the upper end of the crane, and are held in to the crane by still other sprocket-wheels, h h, on their return.

(No model.)

I I are adjustable brackets that carry rollers j, to hold the chains H out away from the crane in front, as they carry the buckets J up when filled. The shaft 9 is journaled in the lower end of arms K, that are slotted at k k, and are adj ustabl secured each to a member of the crane by bolts L, passed through these slots, so as to admit of tightening the chains when this is desirable. The members of the crane D D are'pivoted to the arms D by the crank-shaft F, which latter carries on its end opposite its crank a fly-wheel, F.

M is a semi-annular rack, the ends of which are firmly secured to the member D of the crane, and taking in the teeth of this rack is the worm-wheel N, fastened onto the shaft n, that carries fast on its upper end the bevel ,cogged wheeln, with which meshes a pinion,

n", keyed onto the inner end of the hand-wheel stem a, journaled in the bearings of thebracket This mechanism serves to give to the members D and D of. the crane whatever inclination at which it is desired to work the buckets. The upper end of the brace 13 is screw-threaded to work into a screw-threaded sleeve, 0, the lower end of which has a heat ing against the base of the bracket P, fastened between and to the swinging arms D, while thenpper end of the said sleeve carries the bevel gear-wheel 0, that meshes with the bevelpinions o 0, fastened onto the inner end of the hand-wheel stems 0 0*, journaled in the bearings of the bracket 1. By means of this arrangement the inclination of the swinging arms D may be increased or lessened, as it is found desirable to lower or raise the crane members 011 their base.

R is a chute, the sides of which are hinged on end of extensions (1 d, formed on the rear edges of the members D and D of the crane. This chute may be maintained on any suitable incline, according to the position of the crane, by means of the ratcheted bars R, hinging in the upper ends of the members, the stop-rod r, each end of which projects beyond the sides of the chute, being adapted to take into either opposing pair of the teeth of the said bars R. The buckets J are provided with re-enforces J that are preferably made almost pointed in their centers, to enable them to readily enter the coal-pile, and these are bolted or riveted to the bucket proper, and when one wears out it may be easily replaced by another. The chains are Secured to the bucket, as shown in Fig. 5that is, one-half of each double link is secured to the side of its bucket by countersunk bolts t, which are held in place by nuts t" on the inside of the bucket.

In order to provide for the attachment of my portable derrick to the hoisting-chains, the

upper face of the platform A has suitable staples, asshown at a".

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A portable derrick adapted to be lowered down into the hold of a vessel, and having means-substantially as described, whereby elevating-buckets attached to an endless chain suitably mounted inthe said derrick may be made to-reaeh any point of the said vessels hold around the said derrick, substantially as and for the purpose set forth.

In a'portable derrick, in combination with elevating-buckets attached to an endless chain suitably mounted in the said derrick and driven thereonby means substantially as described, an adj ustable chute'hung in the u pper end ofthe derrick, substantially as and for the purpose set forth.

3. Ina portable derrick, the combination of. the platform A, having spindle A and semi-annular rack o the base A, having hub b andlugs a a, the shaft 0, with pinion G, the swinging arms D, with bolt a, the crane members D and D", shafts f and g, sprocket-wheels f I and f? for endless drive-chain G, sprocketwheels H H, g" g, and h h for bucket-chains H H, the buekets -J, and chute R, substantially as shown and described, and for the purpose set forth.

. 4. In a-portable derrick, in combination with the crane members D D", having semiannular rack-M, the swingingarms D, having brack'etN, shaftmwith worm-wheel N, cogged wheel a, and hand-Wheel stem a, with pinion a, substantially as shown and described, and

for the'purpose set forth.

5.- Ina portable derrick, in combination with-the-base A, having lugs to a and bl), the

swinging arms D, having bracket 1, the brace B,'with threaded upper end, threaded sleeve 0, with bevel cogged wheelo, and hand-wheel stems 0 0, having-pinions 0 0, substantially as shown and described, and for the purpose set forth. I

6.-In a portable derrick, in combination with the crane'members D D, the crankshaft F, provided with suitable pinion,.and shaitf, provided with corresponding pinion,

drive-wheel F and sprocket-wheel f, and shaft 9, with sprocket-wheel f and chain G, and the engine-cylinder E, having receivingpipe E, exhaust-pipe E, and piston F, substantiallyvas shown and described, and for the purpose set forth.

7. In a portable derrick, in combination with the crane members-D D", having the sprocket-wheels H H and g g for the bucketbucket-chains H H, carried on the sprocketwheels H H.,, g g, and h h, the adjustable brackets I I, carrying bearing-rollers j, sub stantially as shown and, described, and for the purpose set forth.

10. In a portable derrick, in combination with the crane members D and D", having extensions d d, the chute R, having stop-rod 1', and the ratcheted bars R, substantially as shown and'described, and for the'purpose set forth.

In testimony that I claim the foregoing I have hereunto set myhand,:at Milwaukee, in the county of Milwaukee and State of Viscousin, in the presence of two witnesses.

FRED. o. STARKE.

- \Vitnesses:

S. S. STOUT, H. J. FoRsYTHE. I 

